any of a number of crested parrots (esp. genus Cacatua) of Australia and the East Indies, usually with predominantly white plumage, often tinged with yellow or pink
See cockatoo in American Heritage Dictionary 4
(kŏkˈə-to͞oˌ)
nounpl.cock·a·toos
Any of various large parrots, especially of the genus Kakatoe of Australia and adjacent areas, characterized by a long erectile crest.